Efficacy of Different Bio-agents, Botanicals, Fungicides and Nano-fungicides against Pyricularia oryzae
Himendra Raj Raghuvanshi *
Department of Plant Pathology, College of Agriculture, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur- 208002, (U.P.), India.
S. K. Biswas
Department of Plant Pathology, College of Agriculture, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur- 208002, (U.P.), India.
*Author to whom correspondence should be addressed.
Abstract
A study was conducted during the period 2021-2023 at, Department of Plant Pathology, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur and the field experiments at Student Instructional Farm, Chandra Shekhar Azad University of agriculture and Technology, during research period different bio-agent, botanicals, Azotrix (Azoxystrobin 16.7 % + Tricyclazole 33.3% SC) and nanofunficides are used and data were recorded regarding there efficacy in inhibition of mycelial growth of Pyricularia oryzae causing rice blast in Completely randomised design (CRD) under in-vitro condition by adopting principle of dual culture technique and food poision technique. All the selected treatments proved effective and reduce mycelial growth of pathogen, among bioagents T. viride (46.47%) were superior over T. harzianum (43.26 %) and Pseudomonas fluorescence (57.71 %) was better than Bacillus subtilis (48.54%), in botanicals bael leaf extract were found superior (86.32%) over neem leaf extract (74.43%), Fungicide (Azotrix @ 25, 50 and 100ppm) can reduce growth upto 85% over control and among nanofungicides Silver nanoparticles @10ppm was found best which can inhibit (61.87%) mycelial growth.
Keywords: Rice blast, Pyricularia oryzae, botanicals, bioagents, Nanofungicides